d region

d re·gion

D d

Transcription

- US Pronunciation
- US IPA
- [dee ree-juh n]
- /di ˈri dʒən/

- US Pronunciation
- US IPA
- [dee ree-juh n]
- /di ˈri dʒən/

Definitions of d region words

noun d region the lowest region of the ionosphere, extending from a height of about 60 kilometres to about 90 kilometres: contains a low concentration of free electrons and reflects low-frequency radio waves 3
noun d region the lowest atmospheric zone within the ionosphere, at an altitude of c. 55 to 90 km (c. 34 to 56 mi), containing the D layer 3
noun d region the lowest region of the ionosphere, in which the D layer develops. 1

See all 3 definitions of d region

Information block about the term

Origin of d region

First appearance:

before 1925

One of the 11% newest English words

First recorded in 1925-30

Historical Comparancy

Parts of speech for D region

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of D region

d region popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 48% of English native speakers know the meaning and use word.

This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.

d region usage trend in Literature

This diagram is provided by Google Ngram Viewer